Electric switch-signal



T. L.'& N.'W. DALTON. BLEGTRIG swrrcn SIGNAL.

3 Sheets-Sheet 2.

(No Modei.)

A602 Wow 1M Patented Mar. 6, 1894.

NATIONAL UYHOGRAMNB COMPANY.

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(No Model.)

a Sheets-Sheet- 3. T. L. 85 N. W. DALTON. ELECTRIC SWITCH SIGNAL. No. 515,751. Patented Mar. 6, 1894.

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UNITED STATES PATENT Enron.

THOMAS LLOYD DALTON AND NELSON WVAIT DALTON, OF SANDY HILL, NEW YORK.

ELECTRIC SWITCH-SIGNAL.

SPECIFICATION forming part of Letters Patent No. 515,751,,dated March 6, 1894.

Application filed August 139 3 Serial No. 4:82A43- (No model.)

the United States, residing at Sandy Hill, in p the county of Washington and State of New York, have invented certain new and useful Improvements in Electric Switch-Signals; and we do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has relation to improvements in means for operating and displaying signals used at switches, turnouts, side-tracks, and similar places or points on railroads, especially electric street railways, and it may be used as a station indicator, such means being associated with, and controlled by, electrical devices, as hereinafter specified.

The invention is hereinafterfullydescribed, and particularly pointed out in the claims; the same is fully and clearly illustrated in the accompanying-drawings, wherein- Figure 1 is a side elevation of the mechanism showing the signalin horizontal position also showing the endless chain as having the lower portion broken off. Fig. 2 is a plan view. Fig. 3 is a view showing the device mounted in operative position, and a pull rod in connection with the endless chain,shown' in side elevation. Fig. 4 shows con tact pieces; Fig. 5 illustrates the position of a trolley pushing up the wire against the contactpiece, to close the circuit of the signal mechanism and Fig. 6 is a diagrammatic View showing the arrangement of the circuits.

A designates a suitable frame or support, adapted to carry the mechanism, being shown as consisting of vertical supports 1, 2 and horizontal bars 3, the frame being in duplicats and formed or provided with bearings carrying the journals of the respective gearings and signal-disk, as indicatedin the drawings, and more specifically described, as follows:-In the horizontal bars 3 are formed bearings, in which is mounted a shaft 4 on which is loosely mounted a' sprocket-wheel 5 carrying an endless chain 6, by which the wheel may be rotated by any appliance adapted to the purpose, as by a hand implement 7, provided with a hook to engage in the links of the chain, as shown in Fig. 3 of the drawings. On the shaft of the sprocketwheel 5, a gear wheel 8 is fixed, meshing with a pinion 9 on a shaft 10, which shaft 10 carries a gear wheel 11, meshing with a pinion 2 on shaft or journal 13, in bearing 14, in

standards 15 substantially as shown in the drawings. On the shaft 13 is fixed a disk 16 formed with oppositely arranged steps, pawls, or notches l6 as seen in Fig. 1 of the drawings. On an extension of the shaft 13 is also mounted the signal 17 arranged or fixed parallel with the notches 16 as shown. The notches 16 in the disk 16 are engaged by the pawl-armatures 18, 19, contacting with the magnets B, O, in an electric circuit as shown in Fig. 1, of the drawings. The armatures 18, 19 are arranged in such position that one of them will engage a notch at every quarter-turn of the disk. The mechanism is concealed in a proper case or box 20 mounted on a suitable support 21 with the signal 17, extending therefrom and exposed to View.

On the endless chain 6 may be attached a weight 6", the force of which when the pawl- .armatures are released, moves the mechanism until the next engagement of one of the pawlarmatures. This weight 6 is a substitute power for the hand-pull 7. On the shaft of the sprocket-wheel 5, is aratehet 22, engaged by a pawl 23, arranged to hold the sprocket wheel against reverse motion.

The electrical device used in association with'the mechanism, consists of the magnets B, U, and pawl armatures 18, 19, the magnets having circuit connection by wires a, b, to contact pieces 0, mounted adjacent to the main circuit or trolley wire d, from which one of the magnets is energized on the contact being made between the trolley wire and the contact-piece as indicated in Fig. 6, of the drawings. The contact pieces 0 are formed with a lower forked portion which extends below the conducting wires, so that either by vibration, or elevation, the circuit which controls the signal will be actuated.

In Fig. 3 of the drawings an electric lamp 6, is shown suspended behind the signal, to show the position of the same; the signal being turned with the edge at right angles to the lamp will leave the naked white-light to .Theaperatifinfithe tnhineis as foliows V When it is desired to operate thesignalfthe' mney wire iszpushed up by the tml leyin to.

drawings thus ensrgizing the magnets lithe 1 signaL'and withdrawing the: pa'wharmat'ur9 from engagement with the disiz whieh being r -efifected the-fares 70f; weight at once' acts *to 2: turn {he train ofge'arings', which mo'vement I continues untiitheqziattewturn of th s diski's 4 made when on'evof tha pawl-armatures en gages the nasxt noteh' thefl diskgand smps r the -mo vemen't' of the mechanism; until "the nextactiml; of, thearmatu r'efi i 'i hisioperatiou 7 '7 may bewaceromplishad byihehandi-imiplement..

5; flhea'eurrenfiinsedin: opetati-ng the mag-s:

" rentwimuir and is reducefibjy a resistance (31311 or by lamps in" series "came-media the easing); containingihe mechanism;

1 1 'I-n =Fig. Skis illustrated" there-iretiits, andrefstance being thereio'" had g ihwiflappear, that; 11 V 7 t0 set the signalta theismp, or danger pas? than 12116Qflfl'BIIU'GHiGPS =-wi1=e 22,02, cimbact' V with theiralleywirethenee bywirehthrough magnt (3 anti resistanceR tutmekzl. thi'orugh" 1 in case the weight isxnotasedafi the pnwer;

"Having'thus'describefiaur invention vyhat Wefllaiim,.aneldesiraio secure 0y Letters Pat 7' 1. -ThQ combination cf a tminof gearing, a sproakat-wlmesl'"onJ-theshaft of one: ofiitha 7 'geargachain tuturuthesprefikekwheel and-" ybpemtefihetrainef 'garifig;a rotatingdiskM r 11min g eppas-itelyianrau ged radial" n'etehes therein; a signal on aa extension ofthe disk i n pmsence aftwa: witnesses. 7

- NELSQN-WAIT5DALTON Witne'ssw: V 7' MILO INGALSBE',"

wire mi -And tnwseistke signali at aaaty pea. Y sitionthecmrentpmcesfis oueomaegthrsugh y 'shaft,pivatallyrmoun te-pajwbarmaturesio" engage'ithmmtehs iarthai disk,- magnets to" :aperaisetbe awiharmaturesgandran eleetric; Qimuit imenergize the ,magnefis s-ubstantially a r 50. Thai c nmbinatiaunf ihasignai circuit 1 1161 trolleywire'uit; 0% a ifarked V i eontaat 1 7 pieee'between' thesaid 'ei'reuits' and the t-r01 iiey-eomaebanne. afvzth s' ci mnits"lying 'inihe 1 crotch iii the -fark; whereby-- 0h 6 tmiifiywire V :is meved i'fllGDDfifi/Qb withitha signal wiraand mhe'signal: apamtad, substantially as specifiedQ T; V lute/s5many,whereefWeatfixoursignatunes 7:

- THOMAS LLQYEDALEQSEQ r GRENVILLE'MLINGALSBE. 

